src/material/SiGe/SiGe_basic.cc

   1 /*****************************************************************************/
   2 /*                                                                           */
   3 /*              8888888         88888888         88888888                    */
   4 /*            8                8                8                            */
   5 /*           8                 8                8                            */
   6 /*           8                  88888888         88888888                    */
   7 /*           8      8888                8                8                   */
   8 /*            8       8                 8                8                   */
   9 /*              888888         888888888        888888888                    */
  10 /*                                                                           */
  11 /*       A Two-Dimensional General Purpose Semiconductor Simulator.          */
  12 /*                                                                           */
  13 /*  GSS material database Version 0.4                                        */
  14 /*  Last update: Feb 17, 2006                                                */
  15 /*                                                                           */
  16 /*  Gong Ding                                                                */
  17 /*  gdiso@ustc.edu                                                           */
  18 /*  NINT, No.69 P.O.Box, Xi'an City, China                                   */
  19 /*                                                                           */
  20 /*****************************************************************************/
  21 //
  22 // Material Type: Si(1-x)Ge(x).
  23
  24
  25 #include "PMI.h"
  26
  27 class GSS_SiGe_BasicParameter : public PMIS_BasicParameter
  28 {
  29 private:
  30   PetscScalar PERMITTI;  // The relative dielectric permittivity of Si(1-x)Ge(x).
  31   PetscScalar EPS_X1;
  32   PetscScalar EPS_X2;
  33   PetscScalar AFFINITY;  // The electron affinity for the material.
  34   PetscScalar AF_X1;
  35   PetscScalar AF_X2;
  36   PetscScalar PERMEABI;  // The relative megnetic permeability of silicon.
  37   PetscScalar DENSITY;   // Specific mass density for the material.
  38
  39   void   Basic_Init()
  40   {
  41     PERMITTI = 1.180000e+01;
  42     EPS_X1   = 0.000000E+00;
  43     EPS_X2   = 0.000000E+00;
  44     AFFINITY = 4.170000e+00*eV;
  45     AF_X1    = 0.000000E+00;
  46     AF_X2    = 0.000000E+00;
  47     PERMEABI = 1.0;
  48     DENSITY  = 2.320000e-03*kg*pow(cm,-3);
  49   }
  50 public:
  51   PetscScalar Density(const PetscScalar &Tl) const
  52   {
  53         return DENSITY;
  54   }
  55
  56   PetscScalar Permittivity() const
  57   {
  58         PetscScalar mole_x = ReadxMoleFraction();
  59         return PERMITTI + EPS_X1*mole_x + EPS_X2*mole_x*mole_x;
  60   }
  61
  62   PetscScalar Permeability() const
  63   {
  64         return PERMEABI;
  65   }
  66
  67   PetscScalar Affinity(const PetscScalar &Tl) const
  68   {
  69         PetscScalar mole_x = ReadxMoleFraction();
  70         return AFFINITY + AF_X1*mole_x + AF_X2*mole_x*mole_x;
  71   }
  72
  73 public:
  74   GSS_SiGe_BasicParameter(const PMIS_Environment &env):PMIS_BasicParameter(env)
  75   {
  76     Basic_Init();
  77   }
  78   ~GSS_SiGe_BasicParameter()
  79   {
  80   }
  81 }
  82 ;
  83
  84 extern "C"
  85 {
  86   PMIS_BasicParameter* PMIS_SiGe_BasicParameter_Default (const PMIS_Environment& env)
  87   {
  88     return new GSS_SiGe_BasicParameter(env);
  89   }
  90 }